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Repository Design Optimization for Long-Lived ILW

Published online by Cambridge University Press:  21 March 2011

I.G. McKinley,
H. Kawamura,
F.B. Neall and
K. Ando
I.G. McKinley
Affiliation:
Nagra (ISP), Hardstrasse 73, 5430 Wettingen, Switzerland, Email: mckinleyi@nagra.ch
H. Kawamura
Affiliation:
Obayashi Corporation, Design Department No. 2, Civil Engineering Technical Division, Shinagawa Intercity B-Building, 2-15-2 Konan, Minato-ku, Tokyo 108-8502 - Japan, Email: kawamura@o-net.obayashi.co.jp
F.B. Neall
Affiliation:
Neall Consulting Ltd., 23 Howe Bank Close, Kendal, LA9 7PU, United Kingdom, Email: fiona.neall@btinternet.com
K. Ando
Affiliation:
Obayashi Corporation, Design Department No. 2, Civil Engineering Technical Division, Shinagawa Intercity B-Building, 2-15-2 Konan, Minato-ku, Tokyo 108-8502 - Japan, ando@o-net.obayashi.co.jp
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Abstract

From the point of view of clear demonstration of long-term safety, some of the long-lived intermediate-level wastes (ILW) are probably the most challenging of all waste types. Repository concepts for such wastes are reviewed with respect to optimization of operational procedures, post-closure performance, ease of making the safety case and costs. In particular, the advantages of designs incorporating a hydraulic cage and partitioning of wastes with different properties are discussed.

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References

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